Revert "Lock branch with OWNERS file"

This reverts commit 7036e82f8182712ee3459f20b4ea9cbf430a0e42.

Bug: 238399460
Change-Id: I325ad914e38c7f8cb6767781c9df20002d9f28ca
Signed-off-by: Robin Peng <robinpeng@google.com>
diff --git a/OWNERS b/OWNERS
deleted file mode 100644
index 334c64b..0000000
--- a/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-per-file *=lucaswei@google.com,wilsonsung@google.com,robinpeng@google.com